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41. 发明专利

JPS6182403A Bobbin for superconductive magnet 失效
标题翻译：超级磁铁BOBBIN
公开(公告)号：JPS6182403A
公开(公告)日：1986-04-26
申请号：JP20482684
申请日：1984-09-29
申请人： Toshiba Corp
发明人： ITO DAISUKE
IPC分类号： H01F6/06 , H01F5/08
CPC分类号： H01F6/06
摘要： PURPOSE:To improve the cooling efficiency and to reduce the manufacturing cost by providing two terminal boards having a coolant passing hold at the center and opposed, and a winding shaft made of a plurality of rod-shaped winding shaft structure members for coupling the outsides of the holes of the boards. CONSTITUTION:Two disc-shaped terminal boards 13, 14 are formed with coolant holes 12 at the center and opposed, and the outer peripheries of the holes 12 of the boards 13, 14 are axially coupled with a winding shaft 15. When the coolant is fed from a coolant passage hole 12 into the shaft 15, it contacts superconductive wires 5 exposed on the inner surface of the shaft 15 to cool it. Further, the coolant advances radially in the gap between the adjacent wires 5 in the axial direction to cool the entire wires 5. If the diameters of the holes 12 formed at the terminals 13, 14 are sufficient for flowing the coolant, the cooling efficiency of flowing radially the coolant in the coil can be largely increased.
摘要翻译：目的：提供冷却效率并降低制造成本，通过提供两个具有中心并相对的冷却剂通过保持的端子板，以及由多个用于将外部的外部连接的多个棒状卷绕轴结构件板的孔。构成：两个圆盘状端子板13,14在中心形成有冷却剂孔12并且相对，并且板13,14的孔12的外周与卷绕轴15轴向联接。当冷却剂是从冷却剂通道孔12进入轴15，它接触暴露在轴15的内表面上的超导线5以使其冷却。此外，冷却剂沿轴向方向在相邻的线5之间的间隙中径向延伸以冷却整个线5.如果形成在端子13,14处的孔12的直径足以使冷却剂流动，则冷却效率可以大大增加线圈中的冷却剂的径向流动。

42. 发明专利

JPH05176450A SUPERCONDUCTING CURRENT LIMITER 失效
公开(公告)号：JPH05176450A
公开(公告)日：1993-07-13
申请号：JP33844091
申请日：1991-12-20
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： HARA CHIKUSHI , OKUMA TAKESHI , TSURUNAGA KAZUYUKI , ITO DAISUKE , TADA TAKAMITSU
IPC分类号： H01L39/16 , H02H9/02
摘要： PURPOSE:To make it possible to vary a current limiting operation current value over a wide range and to increase the conduction capacity. CONSTITUTION:The superconducting current limiter comprises a pair of non-inductive trigger coils 3b, 3c composed of superconducting lead wire directly connected with a current path wherein quench phenomenon takes place when an overcurrent exceeding a critical current level flows therethrough to suppress the overcurrent, a DC field generating magnet 3e for applying a DC bias field on the trigger coils 3b, 3c, and a power supply 5 for magnetizing a magnet which controls current supply to the DC field generating magnet 3e thus regulating the strength of DC bias field to be generated by the DC field generating magnet 3e.

43. 发明专利

JPH0564354A ACCIDENT SECTION SEPARATING METHOD FOR POWER DISTRIBUTION 失效
公开(公告)号：JPH0564354A
公开(公告)日：1993-03-12
申请号：JP24457591
申请日：1991-08-29
申请人： TOSHIBA CORP
发明人： SUGIYAMA YOSHIYUKI , TSURUNAGA KAZUYUKI , ITO DAISUKE , TADA TAKAMITSU , OKUMURA HIROYUKI
IPC分类号： H02H7/26
摘要： PURPOSE:To make it possible to have the minimum isolation of accident section and minimize the power interrupted section by attaching a superconducting current limiter to a section switch and by setting its operation value to the accident voltage value. CONSTITUTION:Two power distribution lines are connected in a loop form through a plurality of section switches 3 (3a to 3e), and a current limiter 4 (4a to 4e) for limiting the accident current and an overcurrent relay 15 for monitoring an accident current are connected to each point of said switch. A quench sensor 13 is attached to each end of a trigger coil 12 of said current limiter 4. Operation value of limiting value 4 is properly selected for the short-circuit current value during the accident at power distribution line; at the time of accident on the line, a superconducting current limiter 4 which is the closest to the accident point is operated and accident is eased, and the accident current after limiting is removed by the section switch for load current switching based on the operation output of the quench sensor 13. By doing this, accident isolation can be performed at a high speed at the same time with the accident occurrence, and power interruption time period can be reduced and power interruption range can be minimized.

44. 发明专利

JPH04359626A CURRENT LIMITER 失效
公开(公告)号：JPH04359626A
公开(公告)日：1992-12-11
申请号：JP13306491
申请日：1991-06-04
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： HARA CHIKUSHI , OKUMA TAKESHI , YAMAMOTO TAKAHIKO , ITO DAISUKE , TSURUNAGA KAZUYUKI , TADA TAKAMITSU
IPC分类号： H01F6/06 , H02H9/02
摘要： PURPOSE:To provide a reliable current limiter where current limitation starting current value is stable and besides which can be used repeatedly. CONSTITUTION:Current limiting units 12u and 12v are inserted, respectively, into electric paths which constitute U phases, V phases, and W phases. Each current limiting unit 12u and 12v is composed of a first current limiting element, which is constituted by winding noninductively, a superconductive lead wire which has a critical current value smaller than the limited current value of an electric path and larger than the stationary current value of the electric path, and a second current limiting element, which is connected in parallel to the first current limiting element and also has as certain impedance value. These several current limiting units 12u and 12v are stored in the condition of being separated electromagnetically with a magnetic shield member 13 separately for each phase in a cryostat 11.

45. 发明专利

JPH0458725A SUPERCONDUCTING CURRENT LIMITER 失效
公开(公告)号：JPH0458725A
公开(公告)日：1992-02-25
申请号：JP16852690
申请日：1990-06-28
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： HARA CHIKUSHI , OKANIWA KIYOSHI , TSURUNAGA KAZUYUKI , SAWAMURA MITSUHITO , ITO DAISUKE , MASUDA YOSHIHISA
IPC分类号： H01L39/16 , H02H9/02
摘要： PURPOSE:To shorten the restoring time of trigger coils to superconducting states so as to suppress the heat produced by the coils and, at the same time, to reduce the coolant consumption of the coils by constituting the coils so that the resultant value of induced voltages generated across each trigger coil by magnetic fluxes from a current limiting coil can be minimized. CONSTITUTION:The first and third trigger coils 3B and 3D are coiled clockwise and the second and fourth trigger coils 3C and 3E are coiled counterclockwise. As a result, voltages induced at current limiting time offset each other and a loop current is reduced. When such constitution is used, an excessively large accidental current is quenched in a moment and the occurrence of an overcurrent is suppressed and, at the same time, the flowing direction of the accidental current is turned to a current limiting coil 3a side. Therefore, the Joule loss of the trigger coils and coolant vaporizing quantity can be reduced and the restoring time of the trigger coils to superconducting states can be shortened.

46. 发明专利

JPH0458724A SUPERCONDUCTING CURRENT LIMITER 失效
公开(公告)号：JPH0458724A
公开(公告)日：1992-02-25
申请号：JP16852590
申请日：1990-06-28
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： HARA CHIKUSHI , OKANIWA KIYOSHI , SAWAMURA MITSUHITO , TSURUNAGA KAZUYUKI , ITO DAISUKE
IPC分类号： H02H9/02
摘要： PURPOSE:To appropriately detect the restoration of a trigger coil to a superconducting state without any time lag and requiring any separate power source by detecting the phase of the voltage across the trigger and the phase of a loop current circulated in the coil, and discriminating the degree of superconduction of the coil based on the difference between both phases. CONSTITUTION:The phases of a loop current iTCL, and trigger coil voltage eTC are respectively detected by means of a loop current phase detector 14 and trigger coil voltage phase detector 16 and supplied to a phase comparator 17. The comparator 17 always detect the phase difference between the trigger coil voltage eTC and loop current iTCL When the difference reaches a phase lag of 90 deg.. the comparator 17 sets its output signal es at '1' and closes a trigger switch 3d so as to restore the trigger coil to a steady state without producing any mis-quench. Therefore, the restoration of the trigger coil to a superconducting state can be detected appropriately with no time lag.

47. 发明专利

JPH03145922A CURRENT LIMITER 失效
公开(公告)号：JPH03145922A
公开(公告)日：1991-06-21
申请号：JP28319989
申请日：1989-10-31
申请人： TOSHIBA CORP
发明人： TSURUNAGA KAZUYUKI , ITO DAISUKE
IPC分类号： H02H9/02
摘要： PURPOSE:To reduce power loss at the time of limiting a current by connecting a normally closed contact in series with a plurality of series first superconducting coils wound noninductively, and connecting a second conductive superconducting coil having a higher critical current value than that of the first coil in parallel. CONSTITUTION:A normally closed contact switch 2, a current limiter 3 and a load 9 are connected in series with an AC power source 1. In the limiter 3, a current limiting coil 5 made of an inductive superconducting coil having a predetermined critical current (IC2) is wound inside a common spool 4. A heat insulating plate 7 is held at the outside, a plurality of noninductively wound coils 6a-6c are connected in series in a multilayer state to form a trigger coil. The coils 6a-6c are formed by winding superconducting materials set lower in critical current (IC1) than the IC2 and connecting a switch 8 in series. When the critical current IC1 exceeds by the overcurrent of the load 9, the trigger coil is quenched to show a high resistance, the current is commutated to the coil 5, thereby rapidly opening the switch 2 by the voltage of both ends. Thus, the power loss at the time of limiting the current is reduced.

48. 发明专利

JPH034573A SUPERCONDUCTION SWITCH 失效
公开(公告)号：JPH034573A
公开(公告)日：1991-01-10
申请号：JP13958789
申请日：1989-05-31
申请人： TOSHIBA CORP
发明人： ITO DAISUKE
IPC分类号： H01L39/20
摘要： PURPOSE:To improve a superconduction switch in stability and off-performance by a method wherein the diameters of superconductive conductors buried in a metal matrix of high electric resistance are made about 5mum or below in average value. CONSTITUTION:A very fine multi-conductor superconductive wire 1 is constituted in such a manner that many superconductive conductors 3 are buried in a metal matrix 2 of high electric resistance. The diameters of the superconductors 3 buried in the metal matrix 2 are made about 5mum or below in average value. By this setup, a superconduction switch excellent in stability and off-performance can be obtained.

49. 发明专利

JPH01251707A DEVICE FOR MONITOR OF SUPERCONDUCTING COIL 失效
公开(公告)号：JPH01251707A
公开(公告)日：1989-10-06
申请号：JP7661288
申请日：1988-03-31
申请人： TOSHIBA CORP
发明人： MATSUKURA KUNIO , TASHIRO IKUO , ITO DAISUKE
IPC分类号： H01F6/02 , H02H7/00
摘要： PURPOSE:To effectively detect the quench of a superconducting coil by forming a variable impedance element at part of a voltage divider, and variably providing the impedance of the element corresponding to the signal of a lower frequency band than a specific frequency band upon normal conduction transition of the signal contained in a potential difference signal. CONSTITUTION:When a quench is generated in a superconducting coil 11 in an AC exciting state of the coil 11, the impedance of the coil 11 is varied, and the output of an insulating amplifier 21 is abruptly increased. An intrinsic frequency signal component presented at the time of the quench is contained in the output of the amplifier 21, and cannot be passed through a low pass filter 22. Since a variable impedance element 18 does not respond, the output of the amplifier 21 is increased. On the other hand, a band pass filter 23 passes the intrinsic frequency signal component, the output of the filter 23 is increased. When it exceeds a detection level E, a cut-off command signal F is output from a breaker driving circuit 25 to open a breaker 14, thereby stopping power supply to the coil 11.

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